Condensing Boilers Prices

Condensing Boilers prices vary from £500 to £1,700 depending on the brand or output.

Condensing boilers prices vary dependent on your budget.  You can, for example, buy a perfectly good condensing boiler from a top brand, such as; Baxi, Valliant, Potterton, Worcester Bosch or Glow Worm, for less than £700.  These would, however, despite being of an incredibly high standard, have limited energy output if you are looking to provide heat for a larger home.  What is a Condensing Boiler?

What is the Difference between Output and boilers pricing?

The more energy your boiler produces, the more expensive it will be. For example, the Greenstar Highflow 550CDi – available at £1972.44, produces 41.1 kw of energy; compared to the much cheaper Baxi Neta-tec 24 HE Combi Boiler, which produces 24 kw and is available at £666.62.

Here are some further  comparisons of condensing boilers prices and energy output of a select few top quality models.

Model Energy Output (kw) Typical Price
Worcester Bosch Greenstar Highflow 440CDI 44/55 £1,644.39
Glow Worm Flexicom sx 31 £900
Valliant EcoTec Pro 24 NG 24 £744.86
Baxi Duo-Tec 24 HE 24 £726.48
Potterton Promax 12HE Plus Slimline 11.8 £553.72

What are the Other Factors to Consider?

Not only does energy output influence condensing boilers prices, so to does a boiler’s dimensions, flow rate and efficiency rating.   Everyone’s boiler requirements differ according to your home needs.  What you want from your condensing boiler for you and your home will influence the price the price you pay.  The first step is to have a Gas Safe engineer assess your home and help you determine exactly what model is most suitable for you.

Why Do I Need a Condensing Boiler?

New building regulations now enforce that every new property build have a high energy efficient condensing boiler installed.

The reason behind this enforcement is because both the UK and EU insist you will save both money and energy in the long term.  Condensing boilers, as opposed to be being a specific make or brand, are rather called so because of the system they use within the heating process.  Quite simply, waste, in the form of water vapour, is reacquired by the boiler in the form of condensation, and thus its potential energy is retained.


  • Highest energy efficiency SEDBUK rating – up to 90%
  • Cuts heating costs by up to £130* a year
  • Comply with new legislation


  • More expensive than other boiler types
  • Condensing boilers can go wrong and be costly to maintain
  • Technology is complex therefore finding an engineer to fix any problems might be difficult

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* Energy Saving Trust